> Horst von Brand wrote:>> Even better: Write a C wrapper for each affected program that just>> renices>> it as needed.>> I suggest to implement scalable solution, so the final user wont't> have to write separate wrapper for *each* program. universal wrapper> is better solution, but (now i know, that implementing something that> can be dangerous if used incorrectly is so evil, that only the devil> could have proposed it) it forces use of database (that normally would> be kept in filesystem's file metadata)

A userspace solution could still use POSIX extended attributes.

> and if some-malicious-person would have accessed it in write mode> (as result of wrong file permissions), the system performerance> would be in danger. in my solution, there is per-file attribute,> accessible only for root, and if hacker has root permissions,> existence of nice attribute is meaningless.

You forgot something: this idea of yours needs to be implemented,tested, and debugged. Those things take time, and effort, and arestill of very little value.